VAD shutter valve operation
VAD SHUTTER VALVE OPERATION
| Engine speed | 5, 800 rpm with TP_REL PIDs 50% or over | |
|---|---|---|
| Below | Above | |
| Shutter valve | Close | Open |
- If the shutter valve operation is not as specified, inspect as follows:
- Verify that DTC P2676 or P2677 is not displayed.
- If DTC P2676 or P2677 is shown, perform DTC inspection.
(See DTC TABLE .)
- If DTC P2676 or P2677 is shown, perform DTC inspection.
- Inspect VAD control solenoid valve.
(See VARIABLE AIR DUCT (VAD) CONTROL SOLENOID VALVE INSPECTION .)
- If the VAD control solenoid valve is not okay, replace VAD control solenoid valve.
- If the VAD control solenoid valve is okay, inspect the following:
- Vacuum hose looseness or damage
- Vacuum chamber cracks or damage
- Shutter valve actuator.
- Shutter valve is stuck open or closed.